An Alternative Business Cycle Dating Procedure for South Africa
Adel Bosch and Franz Ruch
Last Modified Date:
2021-05-28, 12:31 PM
Publications > Working Papers
This paper applies a Markov switching model to the South African economy to provide an alternative classification of the business cycle. Principal components analysis (PCA) is applied to 114 of the 186 variables used in the dating of the business cycle by the South African Reserve Bank. PCA establishes the co-movement in the dataset to calculate the reference turning points over the period 1982 to 2009. The large dataset broadens the information set available to date the turning points. The number of factors are chosen using a modified Bai and Ng (2002) method. The Markov switching model is also applied to Gross Domestic Product (GDP) as this is a commonly used variable to date the business cycle in the literature and provides a benchmark to the factor model. Our results indicate that the factor model accurately dates the South African business cycle and compares favourably to the SARB dating.